My next and more important question is if the distortion performance is superior or inferior to normal cone drivers, for me they are only interesting if they have equal or superior performance, preferably superior. I mean, why buy an expensive driver if a cheap woofer with lots of cheap tweeters does the job better?

And lastly, anyone how is the dispersion pattern is backwards? I would use it in an open or no baffle speaker, so identical forwards and backwards dispersion would be ideal but somehow I doubt it would be that nice .

Hi,

The reason d'aitre of a BMR is its bandwith and dispersion, distortion can be worse.

Icentical response and dispersion front and back is highly unlikely, like most drivers.

rgds, sreten.

__________________There is nothing more practical than a really good theory - Ludwig BoltzmannWhen your only tool is a hammer, every problem looks like a nail - Abraham Maslow

I have been testing a BMR and had some good results with on wall and free standing designs. I am using a similar version to the CSS driver.
Basically mine has a flat front ie the rubber surround is internal.
I have pics but the files are too big.....I will try and shrink them down and post.

Sorry previous pic was from 4 years ago, an old on wall GRP cabinet...
The attached are the correct photos!
I have now cut off the base and mounted the array on the wall...very cool indeed, I will need to take some pics of them on the wall.

Are there any BMR driver available? No response from CSS. I bought one HiWave BMR12 Compact 2" Full-Range Square Speaker 12W 8 Ohm and measured it. Not very even frequency response (highs)and distortion (lows). Sounds like it too.

Thanks Jman!
I think the BMR 's are still only available to OEM's in MOQ of 100 units.
I dont think CSS will release any drivers to the DIY market until some good commercial speakers have been reviewed. CSS really want to establish their BMR as a high end unit. It should be even better than the older version I have.
I had 20 left over from a commercial job I did back in 2008. They are really good if used within their limitations, and they were made under licience by a major Chinese company.
My design goals with this speaker were to have an on wall home cinema speaker that looks cool and could be crossed over to subs at 100Hz.
Having no crossover above 100Hz is really great. The speakers do have a very natural full bodied sound with no "missing bits" or fragmented sound that most crossovers display to my ears.
I use a DEQX DSP crossover with a bit of Eq and room correction but this is overkill ( with a small o !) and really a Mini DSP or Behringer type budget DSP would do fine for home cinema.
Even the DSP / Eq built into good AV amps will work really well with these speakers.
The speakers are capable of high SPL's with wide even frequency / power band spread ( very good off axis as well as on axis) and have high efficiency ( 98 dB / 1 watt, but 2.5 Ohm load the way I have wired this pair...) as most home cinema recievers are fairly weak despite thier claimed specs on paper. I use my own power amps that are happy driving 2 Ohm loads...Hypex NCore would be great here.
All in all I am very happy with them and they really can sing on two channel music as well as fill the room with great movie sound tracks.
I think I am going to build some more variations in the summer, building this line array has given me some ideas how to take the BMR to the next level, maybe even up to Manger quality...!

Some pics of the 8 driver array on wall.
Camera phone shots so not great quality but it gives you an idea of the asthetics in typical UK lounge.
Each speaker only weighs 12 Kg so they are easily hung on 1 screw with a raw plug.